(19)

(11)

EP 0 303 663 A1

(12)

(43) Date of publication: 22.02.1989 Bulletin 1989/08 (21) Application number: 88902057.0 (22) Date of filing: 16.02.1988

(51) International Patent Classification (IPC):  A01N 59/ 12( . ) C08G 65/ 22( . ) C11D 3/ 48( . ) B01F 17/ 00( . ) C08G 65/ 26( . ) (86) International application number: PCT/US1988/000415 (87) International publication number: WO 1988/006405 (07.09.1988 Gazette 1988/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 03.03.1987 US 19870021284 (71) Applicant: GAF CORPORATION Wayne, NJ 07470 (US)	(72) Inventors: TRACY, David, J. Lincoln Park, NJ 07035 (US) HASHEM, Mohamed, M. Wayne, NJ 07470 (US) LOGIN, Robert, B. Oakland, NJ 07436 (US) (74) Representative: Ford, Michael Frederick, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)